<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <style>
        body {
            /*background-color: rgb(172,196,222);*/
            /*background-image: url('image/img_tree.png');*/
            /*background-repeat: no-repeat;*/
            /*background-position: top right;*/
            /*background-position: 300px 300px;*/
            /*background: rgb(172,196,222) url("image/img_tree.png") no-repeat right top;*/
            color: blue;
        }

    </style>
    <title>Title</title>
</head>
<body>
    <h1>CSS</h1>
    <h2>背景图片的设置</h2>
    <p>232323423</p>
    </body>
</html>